For the scurviness of mining system, the security environment of mining system is focus of people.
当前由于矿井所处的恶劣环境，矿井生产安全一直是人们十分关注的问题。
The salvage ship often carry out salvation operation on the scurviness sae, then cause prodigious risk to the salvation sailors.
救助船舶经常冒着狂风巨浪，在各种恶劣海况下实施救助作业，救助船员本身冒着很大的风险。
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